Benton County is a county located in the U.S. state of Mississippi. As of the 2020 census, the population was 7,646. Its county seat is Ashland. It is locally believed that residents convinced the post-Civil War Reconstruction government that Benton County was named after U.S. Senator Thomas Hart Benton, but the name actually honored Confederate Brigadier General Samuel Benton of nearby Holly Springs in Marshall County, nephew of the senator.